SYMPOSIA PAPER Published: 01 January 1999
STP13890S

Changes in Electromagnetic Properties of a Low-Alloy Steel Caused by Neutron Irradiation

Source

In order to develop a method for the nondestructive evaluation of material deterioration in nuclear pressure vessels, changes in the electromagnetic properties of the low-alloy steel A533B, Class. 1 and its weld metal caused by neutron irradiation up to ∼3x1023 n/m2 of neutron fluence at 561K were measured. Electrical resistance, coercivity and Barkhausen noise were selected as the electromagnetic properties to measure. It was found that decreases of several % in the readings of electrical resistance and coercivity, and an increase of several % in the Barkhausen noise occurred due to neutron irradiation. Good correlations between the changes in the electromagnetic properties and those in the mechanical properties were confirmed. Furthermore, an equation using the results of the three tests was found to estimate well the transition temperature and yield strength. From this, the authors conclude that the electromagnetic tests have potential as methods for nondestructive evaluation of material deterioration in the reactor vessels of nuclear power plants.

Author Information

Goto, T
Fukui University of Technology, Fukui-city, JAPAN
Kamimura, T
Takasago Research & Development Center Mitsubishi Heavy Ind. Ltd., Hyogo., JAPAN
Kumano, S
Takasago Research & Development Center Mitsubishi Heavy Ind. Ltd., Hyogo., JAPAN
Takeuchi, I
Takasago Research & Development Center Mitsubishi Heavy Ind. Ltd., Hyogo., JAPAN
Maeda, N
University of Tokyo, School of Engineering, Tokyo., JAPAN
Yamaguchi, A
Tsurumi Research and Development Center, Japan Power Engineering and Inspection Corporation, Yokohama, JAPAN
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E10
Pages: 589–600
DOI: 10.1520/STP13890S
ISBN-EB: 978-0-8031-5395-0
ISBN-13: 978-0-8031-2614-5